Analysis
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max time kernel
148s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
23/03/2024, 09:36
Static task
static1
Behavioral task
behavioral1
Sample
8fe9ec621008b29e7c47a4a2fc492d28.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
8fe9ec621008b29e7c47a4a2fc492d28.exe
Resource
win10v2004-20240226-en
General
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Target
8fe9ec621008b29e7c47a4a2fc492d28.exe
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Size
2.0MB
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MD5
8fe9ec621008b29e7c47a4a2fc492d28
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SHA1
f8930f4037b081f0c54b00f0d1e93d936a7af669
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SHA256
a7a7a60fa640fc9a4dbdbac52b68a1774bb159b99c179df650c9f41fd4d20a6a
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SHA512
2eb25f96e289fee6ad2f70710c39b27c30db889f683a24a4592c47862cfeec84f2c25dacc73d267897f67dc3ec212de4065e0c2719188bc01aaded9af7512b41
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SSDEEP
49152:32dOY3q2cSnjXhVR5ZbNk6tpebYwyq0yRa2pQroFa98:m93F1jTR5Z7uM5LkGroFa6
Malware Config
Extracted
socks5systemz
http://ceztdio.net/search/?q=67e28dd86c0ea7794406f94d7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa44e8889b5e4fa9281ae978f671ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe10c8e993993b
http://ceztdio.net/search/?q=67e28dd86c0ea7794406f94d7c27d78406abdd88be4b12eab517aa5c96bd86e490874896148ab2865b77f80ebad9cc0f7cb63037ed2ab423a4334383ba915d911ec07bb606a0708727e40ea678c45abbe74ffb0e2807e12571c17f3e83fe16c1ee94923dcb6c96
Signatures
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Detect Socks5Systemz Payload 5 IoCs
resource yara_rule behavioral2/memory/4888-71-0x0000000000870000-0x0000000000912000-memory.dmp family_socks5systemz behavioral2/memory/4888-75-0x0000000000870000-0x0000000000912000-memory.dmp family_socks5systemz behavioral2/memory/4888-84-0x0000000000870000-0x0000000000912000-memory.dmp family_socks5systemz behavioral2/memory/4888-97-0x0000000000870000-0x0000000000912000-memory.dmp family_socks5systemz behavioral2/memory/4888-98-0x0000000000870000-0x0000000000912000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
pid Process 3336 8fe9ec621008b29e7c47a4a2fc492d28.tmp 3320 markdownpad32.exe 4888 markdownpad32.exe -
Loads dropped DLL 3 IoCs
pid Process 3336 8fe9ec621008b29e7c47a4a2fc492d28.tmp 3336 8fe9ec621008b29e7c47a4a2fc492d28.tmp 3336 8fe9ec621008b29e7c47a4a2fc492d28.tmp -
Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
description ioc Destination IP 152.89.198.214 -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 3472 wrote to memory of 3336 3472 8fe9ec621008b29e7c47a4a2fc492d28.exe 88 PID 3472 wrote to memory of 3336 3472 8fe9ec621008b29e7c47a4a2fc492d28.exe 88 PID 3472 wrote to memory of 3336 3472 8fe9ec621008b29e7c47a4a2fc492d28.exe 88 PID 3336 wrote to memory of 3320 3336 8fe9ec621008b29e7c47a4a2fc492d28.tmp 91 PID 3336 wrote to memory of 3320 3336 8fe9ec621008b29e7c47a4a2fc492d28.tmp 91 PID 3336 wrote to memory of 3320 3336 8fe9ec621008b29e7c47a4a2fc492d28.tmp 91 PID 3336 wrote to memory of 4888 3336 8fe9ec621008b29e7c47a4a2fc492d28.tmp 93 PID 3336 wrote to memory of 4888 3336 8fe9ec621008b29e7c47a4a2fc492d28.tmp 93 PID 3336 wrote to memory of 4888 3336 8fe9ec621008b29e7c47a4a2fc492d28.tmp 93
Processes
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C:\Users\Admin\AppData\Local\Temp\8fe9ec621008b29e7c47a4a2fc492d28.exe"C:\Users\Admin\AppData\Local\Temp\8fe9ec621008b29e7c47a4a2fc492d28.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:3472 -
C:\Users\Admin\AppData\Local\Temp\is-2SFG5.tmp\8fe9ec621008b29e7c47a4a2fc492d28.tmp"C:\Users\Admin\AppData\Local\Temp\is-2SFG5.tmp\8fe9ec621008b29e7c47a4a2fc492d28.tmp" /SL5="$A0058,1717621,54272,C:\Users\Admin\AppData\Local\Temp\8fe9ec621008b29e7c47a4a2fc492d28.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3336 -
C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe"C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -i3⤵
- Executes dropped EXE
PID:3320
-
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C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe"C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -s3⤵
- Executes dropped EXE
PID:4888
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.8MB
MD5f782cc8d7fc86f98593827aa303629a1
SHA170b5f4a95c5af6c32c821f954f0d73112ce0315b
SHA2562595cec4a4386043acc5e658726c68aa82a076057f2a7eb87db53243d4c7062e
SHA51241eb04c69cfe003e6c9ad6488136cd03085326248c3275a3db4d4d64b489cfc43e4edb09b5f9d4443df56c512cd9936854c2be7304b3e8aa5c4230a08e1c1775
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Filesize
677KB
MD588d7ea648defbc2597fa38ef83112eda
SHA12bce9acfb1b5e08dc29c695eff12fc80949c6440
SHA2565a53b8bd78b1bbf24136b4d8d8191f503abcc24934626ed6f15bf9f6dee17b68
SHA512050ce971e1f7a4e92d272c9c3c9f96f1214286523b018a75084c76dbebb5f32a717afbd9af9c68b7ad71f738c0a331640a8fe765cb4def90678eae4769b2e66a
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
32KB
MD5b6f11a0ab7715f570f45900a1fe84732
SHA177b1201e535445af5ea94c1b03c0a1c34d67a77b
SHA256e47dd306a9854599f02bc1b07ca6dfbd5220f8a1352faa9616d1a327de0bbf67
SHA51278a757e67d21eb7cc95954df15e3eeff56113d6b40fb73f0c5f53304265cc52c79125d6f1b3655b64f9a411711b5b70f746080d708d7c222f4e65bad64b1b771